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Abstract
Several haematological (RBC, WBC and thrombocyte count, HGB, HCT, MCV, MCH, MCHC) and serological parameters (lead blood content, ALA‐D, glucose, GOT, GPT, Try, Chol, TP, Na+, K+, Cl‐, Ca++) have been assayed in specimens of Carassius carassius (L.) var. auratus submitted to sublethal acute exposure to lead (5 ppm., 24 and 48 hrs). The following differences were observed between control and treated samples: the number of RBC was decreased after 48 hrs of treatment; haematocrit, haemoglobin percentage and MCHC were also decreased. Glucose and lead concentrations in blood were increased, whereas ALA‐D, transa‐minases and calcium were decreased. No significant variations in the other studied parameters were observed.